When unsure about the permissibility of a financial transaction, one should:

1. **Consult Islamic Scholars:** Seek guidance from knowledgeable scholars or a Shariah advisory board to get a clear ruling on the transaction.

2. **Review Islamic Principles:** Ensure the transaction adheres to key Islamic principles, such as avoiding interest (riba), excessive uncertainty (gharar), and prohibited (haram) activities.

3. **Research and Analyze:** Conduct thorough research on the transaction’s details, including contracts and terms, to understand its compliance with Islamic law.

4. **Seek Advice from Trusted Sources:** Consult with knowledgeable individuals in your community or financial advisors who are well-versed in Shariah-compliant finance.

Taking these steps helps ensure that financial decisions align with Islamic teachings.